I accidentally put a non-resistor plug in my 50cc Extra when I was setting it up. While doing the test runups while I was setting the plane up, I noticed some glitching in the servos. When I moved towards the front of the plane, the glitching became severe and in all servos. I found that the metal spark plug cap was not well fitted together and had a gap where the halves joined. I closed the gap and the glitching went away. I of course changed to a resistor spark plug anyway, but the point is the interference happened and it was with an Aurora 9 - 2.4 gig system with all Hitec high dollar servos mounted well away from the ignition.

Bottom line..... it doesn't matter how it does it, but interference from the ignition system CAN affect 2.4 gig systems.

AV8TOR